When I think popcorn I think either the kind straight from the movie theater, or those microwave bags of popcorn you can buy at the store (of which I always get the extra butter!) but when I make popcorn at home I'll always put a good amount of melted butter and salt on there. So I suppose that's just always my go-to, but I don't often eat popcorn anyways.
Usually I'm not too big of a fan of bagged popcorn like Smartfood but I've gotten a bag of Chicago Mix and that was nice the one time I had it. I don't think I'd go out of my way to get it again but it was interesting enough to remember it.
I've also seen those flavoured popcorn shakers as well and tried them out of curiosity, but it usually ends up to where you can use them once or twice. After that, the powder gets all stuck together and it's hard to use afterwards. Never really been worth it.